How to straighten sagging roof rafters.
Raising sagging roof rafters.
Drill holes in angle iron.
Push up on the plywood until the foam is touching the roof decking s underside.
The first and foremost step is to find out how many and from where the rafters are sagging.
You may find that.
So you should start by inspecting the roof from the under side or attic.
Actuate the intensity of damage.
If there is any other damage it should also be fixed before moving to the next step.
Force open the cracked end of a sagging rafter with a wood chisel.
Determine the extent of damage.
If the damage is identified then it will be easy to repair it.
The first step is to find out how many rafters are sagging and if anything else is damaged.
Place the plywood and styrofoam side up against the damaged roof decking.
Sagging rafters may be the result of having framed the roof with lumber of dimensions smaller than current building standards such as using 2x4s or 2x6 s or there may be damage to the framing from insects or rot.
Spread polyurethane glue into the crack with a stiff bristle brush.